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It will have blown the internal fuse. The cause of this is almost certainly a blown power transistor or rectifier diode, which are the only faults I've ever seen with these. (Other than a poor connection in the Ext speaker jack, which doesn't blow the fuse.)
The bad news is that they're a bit of a faff to work on. The good news is that unlike a lot of modern amps they use sensible large-scale, discrete components (al least in the analogue/power sections) which are both obtainable and easy to replace.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
Bit of a deadspot up here (North Lincs between Scunthorpe and Gainsborough), I can't find a local guitar tech either.
I might ask him if he knows anyone that does setups locally too as it all seems a little empty for guitar services up here.
I must admit, after moving house, this amp was languishing in the cupboard. It was only when I wanted some more sounds to play with I brought it back out - I'd not played through it in a year.
No kidding, the sounds are brilliant. I also have the metal grilled AD30VT (I have it in my workshop just to test if things are working) which I brought over to the house when this one died. In comparison, it isn't anywhere near as good. Less options, sound not so good...
I just hope the problem isn't terminal - because it looks like buying one of these ain't cheap anymore, but I will keep the thread updated.
They should be on a distortion pedal, at least!
Where's @ThorpyFX when you need him...?
Power transformer
Rectifier diode
Voltage regulator
Power transistor
Or just possibly a shorted speaker (this is very rare).
If it's blowing the mains fuse it can't be the rectifiers for the 8V LT supply or the HT for the valve, since they're separately fused internally, as is the filament supply to the valve. If it's not the transformer it must be in the main power circuit.
It's odd that he thinks the valve isn't working properly since it would be unusual to have two unrelated faults simultaneously, but neither possible valve fault could blow the mains fuse.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein